<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			body{
				height: 4000px;
				width: 4000px;
			}
		</style>
		<script>
			var w=0,h=0;
			function s(){
				window.scrollTo(w+=20,h+=20);
			}
		</script>
	</head>
	<body onclick="s()">
	</body>
</html>